C8051F313 - 25 MHz Mixed-Signal 8051 MCU | Silicon Labs
MPN： C8051F313 ✓ 啟用中C8051F313 概覽
A mixed-signal microcontroller integrates digital control, analog measurement, and communications in one device. The C8051F313 belongs to the C8051 family of 8-bit MCUs, combining an embedded 8051-compatible processing core with ADC, comparator, timer, and communication peripherals. This hierarchy places it within the broader embedded-control and power-management IC categories used in industrial sensing, instrumentation, and compact control systems.
Key features include a 25 MHz pipelined 8051-compatible core, 8 kB of Flash for in-system programming, and 1.25 kB of internal RAM. Its analog subsystem includes a 10-bit ADC with 17 channels and a maximum sampling rate of 200 ksps, plus two comparators for threshold detection and signal conditioning. Four 16-bit timers support timing, waveform generation, and periodic control tasks.
The device integrates an in-system, full-speed, non-intrusive debug interface and on-chip power-on reset according to the manufacturer product information. The C8051F31x family is positioned for compact embedded products that need mixed-signal measurement without a separate analog device. Additional communication interfaces are listed by Silicon Labs, but their individual types are not identified in the supplied source data.
Typical applications include industrial sensor nodes, analog measurement boards, compact motor and process controllers, communication modules, and test equipment. The 200 ksps ADC supports sampled analog monitoring, while the 17 GPIO and four timers allow peripheral control, timing, and external signal acquisition within one device.
A key design consideration is that the exposed-pad QFN footprint requires careful PCB layout and thermal management. Follow the manufacturer's land-pattern and exposed-pad connection guidance, place bypass capacitors close to the supply pins, and verify the required operating and storage voltage limits against the full datasheet before layout release.
This page consolidates manufacturer specifications, distributor pricing, pin-package details, and drop-in replacement guidance into one engineering-focused reference. It also identifies the parameter data that remains unavailable in the supplied sources, allowing procurement and design decisions to be traced to verified product information.
直接替換替代品，適用於 C8051F313 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： C8051F313 （相同外形與佔位） — 差異在於 Package, ADC Resolution, RAM, Timers, Core Architecture.
C8051F311-GM
✅ 直接替換📋 參考替代品（不在目錄中）
C8051F326-GMR
✅ 直接替換📋 參考替代品（不在目錄中）
C8051F312-GM
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
C8051F314-GM
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
C8051F315-GM
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
C8051F313 最大額定值與電氣特性
| Core | 8051-compatible, 25 MHz |
| Maximum CPU Performance | 25 MIPS |
| Program Memory | 8 kB Flash (8K x 8) |
| RAM | 1.25 kB (1.25K x 8) |
| ADC Resolution | 10 bit |
| ADC Channels | 17 |
| ADC Sampling Rate | 200 ksps |
| Comparators | 2 |
| Timers | 4 x 16-bit |
| GPIO | 25 pins |
| 封裝 | 28-pin QFN, 5 x 5 mm |
| Package Type | 28-VFQFN with exposed pad |
| 安裝類型 | Surface mount |
| Debug Interface | In-system, full-speed, non-intrusive debug |
| Power-On Reset | On-chip |
| Clock Speed | 25 MHz |
| RoHS Compliance | Compliant |
| REACH Compliance | Compliant |
C8051F313 28-vfqfn with exposed pad 腳位配置指南
C8051F313（28-vfqfn with exposed pad 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： C8051F313.
請參閱 資料表 以查看完整腳位配置。
典型應用
C8051F313 適用於 6 應用s: Industrial Sensor Node, Compact Analog Measurement Board, Process Control and Valve Controller, Communication Module Interface Controller, Battery-Powered Data Logger, Test and Measurement Front End.
Industrial Sensor Node
The C8051F313 fits compact industrial sensor nodes because its 10-bit ADC provides 17 acquisition channels at up to 200 ksps while the 25 MHz core handles sampling control and local processing. Its 25 GPIO pins can support discrete sensors, digital inputs, and actuator-control signals without a large external peripheral controller. Four 16-bit timers provide periodic measurement, debouncing, and output-timing resources. The device also includes on-chip Power-On Reset and in-system debugging, which simplifies deterministic startup and field firmware maintenance.
推薦
Compact Analog Measurement Board
The C8051F313 is appropriate for a dedicated analog measurement board requiring several sensor inputs and modest digital processing. Its 17-channel, 10-bit ADC samples at up to 200 ksps, allowing the controller to acquire multiple analog inputs and apply filtering or threshold decisions. The four 16-bit timers can pace conversions and trigger events, while the 25 available GPIO pins handle range selection or instrumentation control. Firmware can use 8 kB of Flash for calibration tables and measurement routines.
推薦
Process Control and Valve Controller
The C8051F313 suits compact process-control loops where analog measurements, digital setpoints, and timed outputs must be handled locally. The 10-bit ADC can monitor a pressure or level signal, and its four 16-bit timers support proportional-integral control timing, sampling intervals, and valve-actuator updates. With 25 GPIO pins and 1.25 kB of RAM, the controller can maintain state for filtering and simple control loops. Its 8 kB Flash capacity is appropriate when the application does not require a large communications stack.
推薦
Communication Module Interface Controller
The C8051F313 can act as the embedded controller around a communication module because its 8051-compatible core executes at 25 MHz and the manufacturer describes additional communication interfaces on the device. Its 25 GPIO pins allow module reset, mode selection, and status monitoring, while the four 16-bit timers support frame timing or host-interface timeouts. The 10-bit, 17-channel ADC is useful for supply, bias, or diagnostic measurements. Firmware capacity must remain within 8 kB Flash unless the design is revised.
推薦
Battery-Powered Data Logger
The C8051F313 is appropriate for a battery-powered data logger when low power is prioritized and the measurement rate is moderate. Its on-chip Power-On Reset supports repeatable startup, while the ADC can capture sensor values at up to 200 ksps when higher-rate sampling is needed. Timers can schedule periodic logging, and 1.25 kB of RAM accommodates short acquisition buffers. However, the minimum operating voltage, quiescent current, and analog accuracy are not quantified in the supplied data and must be checked before selecting the device for a power-limited design.
推薦
Test and Measurement Front End
The C8051F313 can serve as the control front end of a compact test or measurement system. Its 17 ADC channels provide flexible analog input multiplexing, and the 25 MHz core can execute acquisition sequencing and limit checking within 8 kB of Flash. Four 16-bit timers offer accurate interval generation for stimulus timing, while 25 GPIO pins support trigger routing and instrument mode control. The in-system debug interface accelerates firmware development, although accuracy, reference voltage, and calibration specifications require review in the complete datasheet.
推薦
推薦產品摘要
工程參考資料，適用於 C8051F313 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | C8051F311-GM | C8051F326-GMR | C8051F312-GM | C8051F314-GM | C8051F315-GM |
|---|---|---|---|---|---|---|
| Package | QFN-28 (5x5 mm) | QFN-28 (5x5 mm) | QFN-28 (5x5 mm) | QFN-28 (5x5 mm) | QFN-28 (5x5 mm) | QFN-28 (5x5 mm) |
| Brand | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs |
主要差異化特點
- Verified 17-channel ADC without a separate analog package (對比C8051F311-GM)
- Exact 8 kB Flash fit for controlled firmware sizing (對比C8051F311-GM)
- Documented same-family replacement path (對比C8051F326-GMR)
設計說明
Use the manufacturer 28-VFQFN exposed-pad land pattern rather than a generic 28-pin QFN footprint. The exposed pad is a thermal and electrical connection and must be tied to the appropriate power or ground plane exactly as directed by the datasheet. Confirm via the manufacturer drawing that the package suffix changes only ordering or temperature information rather than land geometry.
Place the required bypass capacitors directly beside the VDD and ground connections, with the shortest possible return path. Because the supplied excerpt does not state the input-voltage range, regulator configuration, or internal supply requirements, do not select external regulators or capacitor values until the complete electrical specifications and reference schematic have been reviewed. Verify startup behavior against the on-chip Power-On Reset requirements.
Route analog inputs away from switching nodes and high-current outputs, and provide a quiet ground path for the ADC and comparators. The 10-bit ADC is intended for compact mixed-signal measurement, but its usable accuracy still depends on reference-voltage quality, source impedance, acquisition timing, and layout. These analog parameters are not quantified in the retrieved excerpt, so the full datasheet's acquisition network and reference recommendations are required.
Do not treat the base family name C8051F313 as a complete orderable part number. The verified distributor results identify orderable suffixes including C8051F313-GM and C8051F313-GMR, and the $2.2374 LCSC price applies to the -GMR variant. Confirm the exact suffix, temperature grade, pinout, and reel orientation before ordering; suffix differences can change grade, packaging, or marking.
合規資訊
RoHS and REACH compliance are reported in the supplied ETEI comparison material. The device is an industrial MCU rather than an AEC-Q100-qualified automotive device in the supplied data; lead-free, halogen-free, and conflict-minerals status are not stated.
